From the new car features, probably not unique to the 2016 Prius: warm coolant from cylinder head - goes to the throttle body to prevent carb ice and also to the EGR exchange. thermostat range - 80-84 C air fuel ratio - provides proportional output to the oxygen level to adjust the fuel-air mixture some suggestion that exhaust gas heating is not on all models (?!) max HP: 96@5200 max torque: 105@3600 (ft*lb @ rpm) 72@3600 need to figure out which ones have exhaust heat recovery or not - Is this Level 2 ECO option? traction battery case (NiMH) is plastic . . . at f*ckin' last!!!! Bob Wilson
I've read somewhere on this site that Toyota put the 12V battery under the hood. I don't like this because engine head and under-hood temperatures are always hard on the battery. Here in AZ it is typical for a 12V battery to die around 3years use. I would imagine the smaller prius battery would die quicker. Not sure why Toyota did this other than to reduce cost of the long wire run to the back of the car. They certainly didn't do it for weight distribution since the car is already front heavy.
I couldn't tell from the New Car Features. The earlier charts from the September reveal indicated there was a change in the intake manifold to improve 'tumble' but nothing in NCF. Speculation, changing the cylinder fill with more 'tumble' may reduce the amount of fuel-air at maximum power. One thing in NCF that I didn't mention is reference to an extended injector that avoids 'wetting' the intake manifold. The gas is injected on the intake valves and cylinder head port. It is as close to direct injection as possible. But I didn't check to see if it was in the 2010 model engine. Speculation, the Prius is sold in countries that may not be so persnickety about warm-up emissions and more purchase price sensitive. My first thought was Mexico or other more tropical countries. In the 2010, the exhaust heat exchanger is only used to 40C, usually just a mile or so. Elimination would lengthen the engine warm-up and subsequent emissions but also remove a part that can fail and has a cost. Bob Wilson
I was thinking the 'tumble' was for better mixing and distribution of the air:fuel charge in the cylinder.
Yes. This improves efficiency but it may have reduced the amount of fuel-air drawn in the cylinder because of the tumbling. In effect, slightly choking the inflow. Bob Wilson
So far we're not getting from Toyota USA the nice, lengthy, detailed YouTube technical discussion Gen4 vs. Gen3 like we got for Gen3 vs. Gen2 when Gen3 came out.
The engineer's report was pretty detailed about describing the areas of improvement. In April we should get access to the SAE papers and they will have more details . . . never enough but as much as we're likely to see. Then we'll see if any of the new owners go ODB nuts as I will when I can finally rent one for a week. Bob Wilson
Here is the fuel injector assembly in the old version 2ZR-FXE's NCF, I don't know if they are the same since I haven't had a look at the new one. This feature was not mentioned in the paper SAE 2009-01-1061 Development of New 1.8-Liter Engine for Hybrid Vehicles. According to Toyota Electronic Parts Catalog System, for the Prius Gen 3, the China model and Thailand model's exhaust pipe assemble (Part # 17410-37160) don't come with EHRS. All Japan models do have EHRS. There are some EUR and USA models don't have EHRS, but I don't know the exact areas they are sold. P. S. It seems that all PiP models have EHRS, while only USA & Canada's Prius V has EHRS. Speculation, cost / climate / emission regulation play differently in different areas.
Both the PIP and the Prius v were EPA tested* in MY2012, when they were introduced, while the Liftback was tested in MY2010, when it was introduced, perhaps it was too expensive to retest for EPA compliance for the new part. *Often this is by the manufacturer for the EPA, not by the EPA.
The only overt text change is addition of "12-port" injector. The sketches are similar but resolution is too coarse to see the difference. Bob Wilson
had a look at the TOYOTA EPC 201511 in the "USA, Canada" area, there is a Ext. Pipe w/o EHRS marked as "MEXICO SPEC" for Prius Gen 4 And ... there is a special "MEXICO SPEC" (marked as "CRUDE" for EUROPE area) cooled-EGR system, I think it means low-fuel-quality-designated (often comes with not-strict-emission-standards).
Hi Grus. Where can I get the epc? I'm waiting my new 4gen prius in a few days in Mexico, and I think it will be useful to have a copy. SM-N900W8 ?
Electronic Power Control? No..., I'm stumped. What do you mean by epc? Not a guru. Ahh, Electronic Parts Catalogue. Ne'mind.
if you are not in the dealership network you may google something like "Toyota EPC 11/2015" and find some torrent file leaked from somewhere & repacked by someone use it at your own risk ... it is not an authorized way
